3041931

Information

• Patent Grant
• 3041931

• References
• Source

• Patent Number

  3,041,931

• Date Filed

  Not available

• Date Issued

  Tuesday, July 3, 1962
  62 years ago

• CPC

  • G03B27/66 - specially adapted for holding half-tone screens
  • G03F5/02 - by projection methods

• US Classifications

  • 355 - Photocopying
  • 396 - Photography